Patent US4187112A successfully refreshed from Google Patents.
US4187112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive plate containing nitrogen containing condensation type polyesters
Assignee: Toyobo Co Ltd
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Filing: 1977-10-20
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Granted: 1980-02-05
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Expires: 1997-10-20
Abstract
Abstract A photosensitive resin composition which comprises a polyester having a nitrogen atom in the ammonium salt form in the main or side chain representable by the formula: ##STR1## wherein R 1 , R 2 , R 3 and R 4 are each a hydrogen atom or a substituted or unsubstituted hydrocarbon group, at least one of R 1 to R 4 representing a polymeric chain, and X is an anion to be paired with the ammonium ion, a photopolymerizable unsaturated monomer and a photosensitizer.
Inventors
- 👤 Kuniomi Etoh
- 👤 Masaru Nanpei
- 👤 Morio Miyagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:10
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/032; C; C08; C08F; C08F291/00; C08F291/18; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/109
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
169 words
A water or dilute aqueous acid-developable photosensitive plate for preparation of a printing plate and containing a layer of a water-soluble photosensitive resin composition which consists essentially of a condensation type polyester having a nitrogen atom in the ammonium salt form in the main or a side chain thereof, said polyester containing at least 1×10 -3 mole of the nitrogen atom in the ammonium salt form per 1 gram, from 5 to 150% by weight, with respect to said polyester of a photopolymerizable unsaturated monomer and from 0.01 to 5% by weight with respect to the total amount of said polyester and the photopolymerizable unsaturated monomer of a photosensitizer, said polyester having the formula: ##STR8## wherein R 1 , R 2 , R 3 and R 4 are each a hydrogen atom, a substituted or unsubstituted hydrocarbon group or a condensation type polyester chain, at least one of R 1 to R 4 representing said condensation type polyester chain, and X is an anion paired with the ammonium ion.
Claim 2
Dependent Claim
169 words
A water or dilute aqueous acid-developable photosensitive plate for preparation of a printing plate and containing a layer of a water-soluble photosensitive resin composition which consists essentially of a condensation type polyester having a nitrogen atom in the ammonium salt form in the main or a side chain thereof, said polyester containing at least 1×10 -3 mole of the nitrogen atom in the ammonium salt form per 1 gram, from 5 to 150% by weight, with respect to said polyester of a photopolymerizable unsaturated monomer and from 0.01 to 5% by weight with respect to the total amount of said polyester and the photopolymerizable unsaturated monomer of a photosensitizer, said polyester having the formula: ##STR8## wherein R 1 , R 2 , R 3 and R 4 are each a hydrogen atom, a substituted or unsubstituted hydrocarbon group or a condensation type polyester chain, at least one of R 1 to R 4 representing said condensation type polyester chain, and X is an anion paired with the ammonium ion.
Claim 3
Dependent Claim
75 words
The printing plate according to claim 1, wherein the polyester is prepared by treating a nitrogen-containing compound of the formula: ##STR9## wherein R 1 , R 2 and R 3 are each a hydrogen atom, a substituted or unsubstituted hydrocarbon group or a condensation type polyester chain, at least one of R 1 to R 3 representing said polyester chain, with a protonic acid, a quaternizing agent or an epoxy compound and a protonic acid.
Claim 4
Dependent Claim
79 words
The printing plate according to claim 2, wherein the nitrogen-containing polyester is prepared by the use of at least one of the compounds represented by either one of the formulae: ##STR10## wherein R and R' are each a hydrogen atom or a hydrocarbon group, R 1 a , R 2 a and R 3 a are each an alkylene group and A and B are each --OH, --COOH or --COOR", R" being a hydrocarbon group, as the starting monomer.
Claim 5
Dependent Claim
84 words
The printing plate according to claim 2, wherein the nitrogen-containing polyester is prepared by the use of at least one of the compounds represented by the formula: ##STR11## wherein R 4 a and R 5 a are each a hydrocarbon group or they may be linked together to form a ring and R 6 a is a lower alkyl group or a group of the formula: ##STR12## wherein R 4 a and R 5 a are each as defined above, as the starting monomer.
Claim 6
Dependent Claim
38 words
The printing plate according to claim 3, wherein the amount of the monomeric component containing a basic nitrogen atom is from 10 to 100 mole % of the total amount of the monomeric components of the nitrogen-containing polyester.
Claim 7
Dependent Claim
38 words
The printing plate according to claim 1, which further comprises a thermal polymerization inhibitor in an amount of not more than 2% by weight with respect to the total amount of said polyester and the photopolymerizable unsaturated monomer.
Claim 8
Dependent Claim
19 words
The printing plate according to claim 1, wherein said printing plate is a film of said photosensitive resin composition.
Claim 9
Dependent Claim
15 words
The printing plate according to claim 7, which further comprises a support for said film.
Claim 10
Dependent Claim
22 words
The printing plate according to claim 2, wherein the nitrogen-containing polyester is prepared by the use of 2-methyl-2-(N,N-dimethylaminomethyl)-1,3-propanediol as the starting material.
Claim 11
Dependent Claim
29 words
The printing plate according to claim 1, wherein the nitrogen-containing polyester is prepared by treating a polyester, which is obtained by polymerizing 2-methyl-2-(N,N-dimethylaminomethyl)-1,3-propanediol with dimethyl terephthalate, with methacrylic acid.
Claim 12
Dependent Claim
38 words
The printing plate according to claim 4, wherein the amount of the monomeric component containing a basic nitrogen atom is from 10 to 100 mol % of the total amount of the monomeric components of the nitrogen-containing polyester.
Claim 13
Dependent Claim
22 words
The printing plate according to claim 2, wherein the nitrogen-containing polyester is prepared by the use of N,N'-bis(2-hydrosypropyl)-piperazine as the starting material.
Claim 14
Dependent Claim
29 words
The printing plate according to claim 1, wherein the nitrogen-containing polyester is prepared by treating a polyester which is obtained by polymerizing N,N'-bis(2,hydroxypropyl)piperazine with dimethyl terephthalate, with acrylic acid.
References Cited (Backward Citations)
CA613952A
Cited
US3954902A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-02-04 | 1983-08-06 | 1984-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-04 | 1987-08-06 | 1988-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-04 | 1991-08-06 | 1992-02-05 | $7700.00 | Window Closed / Lapsed |